Implementation case of mongoDB multi-condition query in Java

This article mainly introduces the multi-condition query of mongoDB implemented in Java. It has certain reference value. Friends who need it can refer to it.

Requirements: In the mongDB client, we can easily implement multi-condition query, so how to implement it when using java operation?

Client code:

db.url.find({index:4,status:0,url:{$regex:"2016"}}).limit(1)

java code mainly uses DBObject

BasicDBObject doc5 = new BasicDBObject();
 doc5.put("index", 3);
 doc5.put("status", 0);
 //doc5.put("url", "{$regex:'2016'}");错误的写法
 BasicDBObject doc3 = new BasicDBObject();
 doc3.put("$regex", "2016");
 doc5.put("url", doc3);
 FindIterable<document> find = col.find(doc5);</document>

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